The Blueair Classic air purifier removes airborne pollutants that cause allergies and asthma attacks. You can operate the air purifier via the Blueair Friend app, anytime, anywhere. This air purifier is suitable for spaces of up to 70m2, such as small bedrooms and apartments. The filters removes dust, pollen, viruses, and bacteria from the air. When you need to replace the filters, you'll receive a notification via the app. This way, you're always sure that the air purifier will optimally clean the dirty air in the room.